Thread: GEC Loudspeaking telephone
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Old 13th Mar 2021, 12:23 pm   #2
Pellseinydd
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Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
Default Re: GEC Loudspeaking telephone
More info about the GPO version (produced by GEC) at https://britishtelephones.com/lst2.htm

Circuit diagrams of GPO version available to Telecoms Heritage Group members via BT Archives
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